their ambassador in benghazi was killed and the flags of their embassies were lowered in cairo and. that's a reference flags being torn down and banners black flags. the black banner is a symbol of more than al qaeda but a broader political ambition to establish an islamic state. >> various countries, in to your knowledge, in libya, in egypt and also in yemen they perceive the attack in benghazi not just as a victory for them. a successful one and a mullah for -- model for future attacks. >> analysts say it takes six weeks for the leader to respond to make news events. this is put down to his news security. he knows bin laden's undoing was a courier who relayed these audio and video messages to the web; >> shepard: catherine herridge in washington tonight. attack in benghazi, fox news has learned the house intelligence committee is planning to hold a hearing next week but that hearing will be behind closed doors. no public. sources say they expect the witnesses to include the director of national intelligence, james clapper and the cia director david petraeus. at least 39 people are